Defensive publication



DEFENSIVE PUBLICATION UNITED STATES PATENT OFFICE Published at the requestof the applicant or owner in accordance with the Notice of Dec. 16, 1969, 869 O.G. 687. The abstracts of Defensive Publication applications are identified by distinctly numbered series and are arranged chronologically. The heading of each abstract indicates the number of pages of specification, including claims and sheets of drawings contained in the application as originally filed. The files of these applications are available to the public for inspection and reproduction may be purchased for 30 cents a sheet.

Defensive Publication applications have not been examined as to the merits of alleged invention. The Patent Ofiice makes no assertion as to the novelty of the disclosed subject matter.

PUBLISHED JUNE 23, 1970 T875,020 ENZYME-CONTAINING DETERGENT COMPOSITIONS Joseph Dulat, Fetcham, Surrey, John Frederick Collins,

Chessington, Surrey, Walter Jacob Rosenfelder, London, and John Malcolm Schofield, Farnham, Surrey,

England, assignors to United States Borax & Chemical Corporation, Los Angeies, Calif.

Filed July 9, 1969, Ser. No. 840,493 Claims priority, application Great Britain, July 24, 1968, 35,396/ 68 Int. Cl. Clld 3/065, 3/066 US. Cl. 252-138 No Drawing. 11 Pages Specification Detergent compositions containing an enzyme and a combination of sodium phosphate and borate, especially a sodium borate such as borax. The compositions give better stain-removal than obtained Without the boratephosphate combination ibuilder. The borate has the formula M O:xB O in which M is an alkali metal or ammonium ion and x is l to 5. The improved cleaning composi. tion comprises a proteolytic enzyme, a detergent and a builder which consists of at least one sodium phosphate, such as sodium tripolyphosphate, and from 10% to 90% by weight of at least one borate. Preferably the proportion of borate to phosphate is in the range of about 1:3 to about 3: 1. 

